Leading IVF Doctors & Specialists
Find the right reproductive specialist
Leading IVF Doctors & Specialists · Inclusion criteria: listed specialists practice at credential-verified, accredited fertility centers. Education, board certification (e.g., ABOG, reproductive endocrinology & infertility fellowship) and years of experience are verified against official hospital records and public licensure registries; patient reviews are manually verified before publication. How we verify doctors
Dr. Hoo Pek Sung
Consultant Obstetrician & Gynaecologist
Dr. Hoo Pek Sung is a consultant obstetrician and gynaecologist at Metro IVF, certified by the Royal College of Obstetricians and Gynaecologists (MRCOG, UK) and a graduate of Universiti Kebangsaan Malaysia. He covers fertility treatment and ART, laparoscopic and hysteroscopic surgery, and full obstetric care from antenatal monitoring to normal delivery and caesarean birth.
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Malaysia 
Hooman Sadri, MD, PhD
Andrologist, Male Reproductive Medicine
Dr. Hooman Sadri is the andrologist on Carolinas Fertility Institute's roster: an MD, PhD who directs the male fertility research program at Wake Forest, serves as MD director on the American Society of Andrology board, and works in surgical sperm retrieval, vasectomy reversal, electro-ejaculation, Klinefelter syndrome and infertility after spinal cord injury.
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United States 
Dr. Humphrey Pak Lam Choi
Obstetrician and Gynaecologist
Dr. Humphrey Choi is an obstetrician-gynaecologist with The Women's Clinic Group in Hong Kong and an honorary Fellow of the Royal College of Obstetricians and Gynaecologists (FRCOG), experienced in gynecological examination, HSG fertility workups and assisted reproduction.
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Hong Kong, China 
Takeshi Iwabata
Urologist - Andrology & Male Infertility
Dr. Takeshi Iwabata (MD, PhD) leads the andrology (male infertility) clinic at Hanaoka IVF Clinic (Shinagawa). Dual-certified as a urology specialist and supervising physician and as a reproductive medicine specialist, he handles diagnosis, treatment and surgical management of male infertility, with the andrology clinic running on the 2nd and 4th Saturday afternoons.
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Japan 
Dr. Iwahara
Physician
Dr. Iwahara is an OB-GYN physician at Kiba Park Reproductive Center in Tokyo, one of only five JISART-accredited fertility clinics in the city. Part of the team handling infertility diagnosis and assisted reproduction cycles including IVF and IUI, Dr. Iwahara consults on Saturday mornings - a convenient slot for working patients.
Japan 
James Smith, MD, MS
Reproductive Urologist
James Smith directs the UCSF Male Reproductive Health Center, the part of the Center for Reproductive Health that treats the male half of a couple's diagnosis. He runs the men's fertility preservation program, performs sperm retrieval, microsurgical vasectomy reversal and varicocele repair, and studies male reproductive biology.
United States 
Dr. Jamie Merkison
Reproductive Endocrinologist
Dr. Jamie Merkison is a reproductive endocrinologist at Reproductive Biology Associates (RBA), joining in September 2025 after completing her REI fellowship at Emory University. She began seeing new patients in October at RBA's Sandy Springs office. She earned her B.S. and M.D. from Howard University through an accelerated six-year program, graduating summa cum laude, and completed her residency at Baylor College of Medicine. Her clinical interests include fertility preservation, PCOS, diminished ovarian reserve and recurrent pregnancy loss.
United States 
Dr. Jariya Lorwatthanasirikul
Medical Doctor
Dr. Jariya Lorwatthanasirikul is a reproductive medicine specialist dual-certified by the Royal Thai College of Obstetricians and Gynaecologists and the Thai Society of Reproductive Medicine, experienced in IVF, ICSI and PGT-A embryo screening at CONRADY A.R.T. Clinic in Bangkok.
Thailand 
Dr. Jason Chan Nyuk Leong
Obstetrics & Gynaecology Registrar
Dr. Jason Chan Nyuk Leong is an obstetrics and gynaecology registrar at Metro IVF. He earned his MD from Universiti Sains Malaysia in 2001, trained at Queen Elizabeth Hospital, served three years as an O&G registrar at Hospital Putrajaya, and has worked with Hospital Wanita Metro in Klang on all aspects of fertility and IVF since 2006 — over two decades of continuous involvement in the Metro programme.
Malaysia 
Jenna Friedenthal, MD
Reproductive Endocrinologist
Dr. Jenna Friedenthal is a board-certified reproductive endocrinologist at RMA of New York and an assistant clinical professor at the Icahn School of Medicine at Mount Sinai. She specializes in fertility preservation (egg and embryo freezing), IVF with preimplantation genetic testing (PGT), and LGBTQIA+ family building. Her landmark study of early human embryonic mosaicism earned ASRM's highest awards.
United States 
Jennifer Agard, M.D.
Reproductive Endocrinologist
Jennifer Agard, MD is a double board-certified reproductive endocrinologist who serves Pacific Fertility Center's Marin County campus in Greenbrae, the North Bay alternative to driving into San Francisco. She trained at the Jones Institute — where IVF pioneer Howard Jones was her mentor — after UCLA medical school and residency at Saint Barnabas Medical Center, returned to the Bay Area in 2012, and has been named a Castle Connolly Top Doctor from 2020 through 2025.
United States 
Dr. Jennifer Dundee
Reproductive Endocrinologist
Board-certified reproductive endocrinologist, former USC clinical embryologist, and IVF director at the University of Vermont before joining Coastal Fertility.
United States Showing 229-239 of 963
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